Zane played 5 games of bowling. His scores for the first 4 games were 123, 149, 106 and 104 points respectively.
- Find his average score for the first 4 games.
- After his fifth game, his average score increased by 7.9 points. Find his score for his fifth game.
(a)
Total score of first 4 games
= 123 + 149 + 106 + 104
= 482
Average score of first 4 games
= 482 ÷ 4
= 120.5
(b)
Average score of 5 games
= 120.5 + 7.9
= 128.4
Total score of 5 games
= 5 x 128.4
= 642
Score of Zane's fifth game
= 642 - 482
= 160
Answer(s): (a) 120.5; (b) 160